Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sound wave method foundation pile rock-socketed depth detection method for optimizing damping transducer
The invention provides a sound wave method foundation pile rock-socketed depth detection method for optimizing a damping transducer. The sound wave method foundation pile rock-socketed depth detection method comprises the steps of S1 selecting a plurality of detection points in a detection hole in a foundation pile; S2 detecting the plurality of detection points by using a transducer with probe damping to obtain a plurality of groups of sound wave diagrams; S3 intercepting an interface echo region in the plurality of groups of sound wave diagrams to obtain values of normalized reflection energy coefficients r of a plurality of echo energies; S4 taking the depth of the detection hole as a vertical coordinate and r as a horizontal coordinate to obtain a normalized reflection coefficient curve chart of the concrete pile and the surrounding rock interface; and S5 judging the position of the rock-socketed surface, wherein the longitudinal coordinate value at the position where obvious abrupt change or inflection points appear in the curve is the depth of the rock-socketed surface. The rock-socketed depth of the cast-in-place concrete pile is detected through an ultrasonic reflection method, and an important reference index is provided for building foundation pile pulling resistance evaluation. The transducer with probe damping is adopted, clutter signals are reduced or eliminated, and useful signals can be analyzed conveniently.
本发明提供了一种优化阻尼换能器的声波法基桩嵌岩深度检测方法，包括：S1：在基桩上的探测孔内选取多个检测点；S2：利用具有探头阻尼的换能器对多个检测点进行探测，获得多组声波图；S3：在多组声波图中截取界面回波区域，得到多个回波能量的归一化反射能量系数r的值；S4：以探测孔的深度为纵坐标、r为横坐标，得到混凝土桩与围岩界面归一化反射系数曲线图；S5：判断嵌岩面的位置：曲线中出现明显突变或者拐点处的纵坐标值即为嵌岩面的深度。本发明利用超声反射法检测混凝土灌注桩嵌岩深度，为建筑基桩抗拔力评价提供重要参考指标；采用具有探头阻尼的换能器，减小或消除杂波信号，便于对有用信号的分析。
Sound wave method foundation pile rock-socketed depth detection method for optimizing damping transducer
The invention provides a sound wave method foundation pile rock-socketed depth detection method for optimizing a damping transducer. The sound wave method foundation pile rock-socketed depth detection method comprises the steps of S1 selecting a plurality of detection points in a detection hole in a foundation pile; S2 detecting the plurality of detection points by using a transducer with probe damping to obtain a plurality of groups of sound wave diagrams; S3 intercepting an interface echo region in the plurality of groups of sound wave diagrams to obtain values of normalized reflection energy coefficients r of a plurality of echo energies; S4 taking the depth of the detection hole as a vertical coordinate and r as a horizontal coordinate to obtain a normalized reflection coefficient curve chart of the concrete pile and the surrounding rock interface; and S5 judging the position of the rock-socketed surface, wherein the longitudinal coordinate value at the position where obvious abrupt change or inflection points appear in the curve is the depth of the rock-socketed surface. The rock-socketed depth of the cast-in-place concrete pile is detected through an ultrasonic reflection method, and an important reference index is provided for building foundation pile pulling resistance evaluation. The transducer with probe damping is adopted, clutter signals are reduced or eliminated, and useful signals can be analyzed conveniently.
本发明提供了一种优化阻尼换能器的声波法基桩嵌岩深度检测方法，包括：S1：在基桩上的探测孔内选取多个检测点；S2：利用具有探头阻尼的换能器对多个检测点进行探测，获得多组声波图；S3：在多组声波图中截取界面回波区域，得到多个回波能量的归一化反射能量系数r的值；S4：以探测孔的深度为纵坐标、r为横坐标，得到混凝土桩与围岩界面归一化反射系数曲线图；S5：判断嵌岩面的位置：曲线中出现明显突变或者拐点处的纵坐标值即为嵌岩面的深度。本发明利用超声反射法检测混凝土灌注桩嵌岩深度，为建筑基桩抗拔力评价提供重要参考指标；采用具有探头阻尼的换能器，减小或消除杂波信号，便于对有用信号的分析。
Sound wave method foundation pile rock-socketed depth detection method for optimizing damping transducer
一种优化阻尼换能器的声波法基桩嵌岩深度检测方法
LYU WENQIAN (Autor:in)
11.02.2022
Patent
Elektronische Ressource
Chinesisch
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